@Broadfield,
Have you considered making a mold with those filled in and pouring new lenses? I work at an R&D lab over for an Oil and Gas company. My gf, she's an intern, used to work a lot with different types of silicons, urethane, and assorted pour-able plastics. I actually asked her to make me some molds for Kouki lenses and she said it wouldn't be a problem. I could look into it for you if you'd like. Just PM me if you're interested and I could dig up the info for you.
Ben
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